Arthur Treloar Whealy was a medical student at the University of Toronto before he joined the Royal Naval Air Service. He received his Aviator's Certificate (Am. 409) on a Curtiss biplane at the Atlantic Coast Aeronautic School in Newport News, Virginia on 5 February 1916. He was commissioned on 29 February 1916 and posted to 3 Wing on 24 August 1916. Serving with 3 Naval Squadron and 9 Naval Squadron during the spring and summer of 1917, Whealy scored seven victories while flying the Sopwith Pup. In the fall of 1917, he began flying the Sopwith Camel and scored an additional twenty victories before he was posted to the Home Establishment on 24 September 1918.
Also listed as Arthur Treloar Whealey in the London Gazette and Arthur Trelvar Whealey on his Aviator's Certificate.
Aviators' Certificate, 15 February 1916
Distinguished Service Cross (DSC)
Flt. Lieut. Arthur Treloar Whealy, R.N.A.S.
For the most consistent determination, bravery and skill with which he has carried out numerous low flying harassing attacks on the enemy's troops, transports, etc., inflicting heavy casualties and damage. By his splendid example and gallantry a great many hostile .operations were hampered and frustrated. He has further brought down many enemy machines.
Lieut. (Hon. Capt.) Arthur Treloar Whealy, D.S.C., R.A.F.
For conspicuous gallantry and devotion to duty. He has proved himself to be a brilliant fighting pilot. Under his able and determined leadership his flight has engaged and accounted for many enemy machines, he himself being personally responsible for many of these.
Lieut. (A./Capt.) Arthur Treloar Whealey, D.S.C. (FRANCE)
This officer has shown a very high standard of efficiency. Untiring, and full of initiative, he sets a fine example to the younger pilots. During the recent advance he has carried out daring reconnaissances at very low altitudes, invariably bringing back valuable information. He is a bold fighter in the air, having accounted for five enemy machines.